I had the same question before I went to OCS also.
When you go to OCS, during week 10 or 11 or whatever, the PSD guy will have the married aviators get "follow on" orders to Whiting. This will allow married guys to move your wives down here to pensacola for API. Once you are all here (Ensign and wife) then if you have your hearts set on going to either corpus christi, vance, or moody for primary than you can request to have your follow on orders changed (you would do this with the people who are in charge of a pool). All this info may be over your head right now, but just know that if you are a married SNA that is going to OCS, you will be able to move your wife to pensacola after OCS at government expense.